Lathe tailstock adjusting means



May 27, 1941. G, 'WAH 2,243,588

LATHE TAILSTOCK ADJUSTING MEANS Filed July 31, 1939 7 u- 4 I5 4 c 2 7 55 7i e /5I\\ "7 4 INVENTOR.

Geo/ye ha/m/sh BY ATTORNEY.

Patented May 27, 1941 UNITED STATES PATENT OFFICE LATHE TAILSTOCKADJUSTING MEANS George Wahnish, Los Angeles, Calif. Application July 31,1939, Serial No. 287,615

7 Claims.

front portion and lowered at its back portion or raised at its backportion and lowered at its front portion, as desired;

Third, to provide an adjusting means of this class in which thetailstock may be rigidly secured in 'such adjusted position;

Fourth, to provide an adjusting means of this class which obviates thenecessity of refinishing the lathe bed ways and slide members caused bywear;

Fifth, to provide a lathe tailstock adjusting means of this class whichprovides for more accurate and finer grade of work on the lathe;

Sixth, to provide an adjusting means of this class by which thetailstock spindle or dead cenclass whereby the tailstock may be raisedat its portlonsinele'vation to facilitate the illustration and Fig. 5.is a sectional view taken from the line 5-5 of Fig. 3 showing some ofthe parts and portions in elevation to facilitate the illustration.

Similar characters of reference, refer to slmilar parts and portionsthroughout the several views of the drawing.

The lathe bed ways I and 2, slide members 3 and 4, clamp member 5,tailstock G. tailstock support I, tailstock adjusting members 8 and 9,-

tailstock adjusting bolts III to 13 inclusive, and

clamp bolts l4 and I5 constitute the principal ter may be alwayspositioned in alignment with the live spindle ofthe lathe;

Seventh, to provide an adjusting means of this class which is readilyapplicable for use in connection with the conventional lathe tailstocknow in use with but slight change; and

Eighth, to provide a lathe tallstock adjusting means of this class whichis very simple and economical of construction, easy to install, easy tooperate, efiicient in its action and which will not readily deteriorateor get out of order.

With these and other objects in view as will appear hereinafter, myinvention consists of certain novel features of construction,combination and arrangement of parts and portions as will be hereinafterdescribed in detail and particularly set forth in the appended claims,refrence being had to the accompanying drawing and to the characters ofreference thereon which form a part of this application in which:

Figure 1 is a side elevational view ofa lathe tailstock of substantiallyconventional form showing my adjusting means in connection therewithandshowing a portion of the lathe bed fragmentarily; Fig. 2 is asectional view taken from the line 22 of Fig. 1; Fig. 3 is a fragmentarysectional view taken from the line 3-3 of Fig. 1; Fig. 4 is a sectionalview taken from the line 4-.-4 of Fig. 2 showing some of the parts andparts and portions of my lathe tailstock adjusting' means. t

The slide rests I and 2. slide members 3 and 4 and clamp member 5 aresubstantially conventional type of lathe tailstock support. The lathebed ways I and 2'are provided longitudinally along their upper sideswith inverted V shaped 'in cross section la and 2a over which restsconforming grooves 3a and 4a in the slide members 3 and 4, as shown bestin Figs. 3 land 4 of the drawing. These slide members 3 and 4 areprovided with upwardly extending bosses substantiall at their middleportions at 3b and 4b which extend upwardly into similar recesses la inthe tailstock support 1, shown best in Fig. 4.

The tailstock support I is also provided with longitudinally disposedgrooves at its opposite sides lb into which the upper sides of the slidemembers 3 and 4 extend, as shown best in Figs. 3 and 4 of the drawing.This support 1 is a substantially rectangularly shaped metallic blockand is provided centrally with a rectangularly shaped hole 10therethrough, shown best in Figs. 2 and 5 of the drawing, which recessis adapted to receive a downwardly extending lug or boss to positionedcentrally on the lower side of the tailstock 6. Otherwise the tailstock6 is substantially flat on its lower side. Positioned in the upper sideof the tailstock support I on opposite sides of the hole lb andextending laterally in .said upper surface are tapered curved grooves111 and le, shown best in .Figs. 2 and 5 of the drawing. Positioned 'inthe tapered [curved grooves are the tailstock adjusting members 8 and 9which conform to said grooves Id and 12 respectively and extend slightlyabove the same. when shifted toward thenarrow end thereof but so thatthey may be shifted longitudinally in ticular construction,

said grooves in either direction independently of each other. Thesemembers 8 and 8 are provided with longitudinal slots 8a and 9a to whichextend the clamp bolts l4 and I! which extend through the clamp memberat their lower ends and extend upwardly through the slots 8a and 8a andthey are provided with nuts' Ila and lie at their upper end for securingand clamping the tailstock 6, tailstock support I, lathe bed ways I and2 and slide members 3 and 4 rigidly together, as shown best in Figs. 3and 5 of the drawing.

Screw threaded into the opposite sides of the support 1 near one end arethe tailstock adjusting bolts l8 and II. Their inner ends extendinwardly adapted to engage the opposite ends of the tailstock adjustingmember 8 and near the opposite ends and similarly positioned are theadjusting bolts l2 and 13 which are adapted to engage the opposite endsof the tailstock adjusting member 9. Thus the bolts Hi to I3 arearranged for shifting the members 8 and 8 longitudinally in the groovesId and 1e respectively for raising and lowering them in said grooves andproviding adjustable supports for the flat portion of the tailstock 6which rests thereon near its opposite ends and secured in such adjustedrelation by means of the clamp bolts I4 and I5.

It will be here noted that the tailstock 6 other than its securing andsupporting means and wedge means shiftably mounted at the front and backsides transversely of said block with their upper sides engageablewiththe tailstock, said wedge means including transversely at its lower sidemay be of any conventional type and is no part of my present invention.

The operation of my lathe tailstock ing means is substantially asfollows:

If it is desired to raise the front end of the tailstock upwardlyrelatively to the back end, the adjusting screw I0 is screwed outwardlyslightly and'the adjusting screw II is screwed inwardly slightlyshifting the member 8 toward the narrower end of the groove 11) whichwill cause the member 8 to raise relatively to the support 1 above theupper surface of the member I and raise the tailstock 6.- Before this isdone, however, the clamp bolts l4 and I5 must be loosened slightly topermit the raise. The back end may also be lowered, if required, byloosening the bolt I3 slightly, then tightening the bolt i2, which willshift the adjusting member 9 toward the large end and lower the member9.

Though I have shown and described a paradjustcombination and arrangementof parts and portions, I do not wish to be limited to this particularconstruction, combination and arrangement but desire to include in thescope of my invention, the construction, combination and arrangementsubstantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a lathe tailstock adjusting means of the class described, atailstock support including a tailstock supporting block shiftablymounted upon the slide rest of the bed of the lathe and wedge meansshiftably mounted at the front and back sides transversely of said blockwith their upper sides engageable with the tailstock.

2. In a lathe tailstock adjusting means of the class described, atailstock support including a tailstock supporting block shiftabiymounted upon the slide rest of the bed of the lathe positioned taperedgrooves in said block provided with curved tapered lower sides andconforming blocks shorter than said grooves positioned therein.

3. In a lathe tailstock adjusting means of the class described, atailstock support including a tailstock supporting block shiftablymounted upon the. slide rest of the, bed of the lathe and wedge meansshiftably mounted at the front and back sides transversely of said blockwith their upper sides engageable with the tailstock, said wedge meansincluding transversely positioned tapered grooves in said block providedwith curved tapered lower sides and conforming blocks shorter than saidgrooves positioned therein, and adjustable bolt means engageable withthe opposite ends of said wedge means.

4. In a lathe tailstock adjusting means of the class described, atailstock support including a tailstock supporting block shiftablymounted upon the slide rest of the bed of the lathe and wedge meansshiftably mounted at the front and back sides transversely of said blockwith their upper sides engageable with the tailstock, said wedge meansincluding transversely positioned tapered grooves in said block providedwith curved tapered lower sides and conformin bloc-ks shorter than saidgrooves positioned therein, adjustable bolt means engageable with theopposite ends of said wedge means, the upper surface of said wedge meansbeing, substantudinally thereon, a tailstock support connected to saidslide members, a tailstock mounted on said support and means forseparately raising or lowering either end of said tailstock relativelyto said support and relatively to the other end.

6. In a lathe tailstock adjusting means of the class described, thecombination with slide rests of the lathe and slide members shiftablelongitudinally thereon, a tailstock support connected to said slidemembers, a tailstock mounted on said support and means for separatelyraising or lowering either end of said tailstock relatively tosaidsupport and relatively to the other end, said means for raisingincluding tapered curved sided wedge members mounted in grooves in saidsupport and shiftable longitudinally in said grooves.

7. In a lathe tailstock adjusting means of the class described, thecombination with slide rests of the lathe and slide members shiftablelongitudinally thereon, a tailstock support connected to said slidemembers, .a tailstock mounted on said support and means for separatelyraising or lowering either end of said tailstock relatively to saidsupport and relatively to the other end, said means for raisingincluding tapered curved sided wedge members mounted in grooves in saidsupport and shiftable longitudinally in GEORGE WAHNISH.

